From its source, the river first flows southeast to Voronezh, then southwest to its mouth. The main city on the river is Rostov on Don, its main tributary the Donets.

顿河从其源头起，首先向东南方流向沃罗涅日，然后向西南方向入海，河上主要城市为罗斯托夫，主要支流是顿内次河。

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But astronomer Yury Mishurov of the Southern Federal University in Rostov-on-Don, Russia, was not convinced that the sun's siblings would be so easy to find.

但是，俄罗斯罗斯托夫市南联邦大学的天文学家尤里·米什洛夫并不认为太阳的兄弟姐妹们能那么容易就被找到。

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I was brought up by my mother, who worked as a shorthand-typist, in the town of Rostov on the Don, where I spent the whole of my childhood and youth, leaving the grammar school there in 1936.

我是由我的母亲一手带大的，她是一名速记打字员，工作并生活于位于Don的一个名叫Rostov的小镇，我的整个童年和青少年时期都生活于此，直到1936年我离开那里的文法学校为止。

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